compositor "Security Cam"
{
    technique
    {
        texture rt0 target_width target_height PF_R8G8B8

        // render scene to a texture
        target rt0 { input previous }

        target_output
        {
            // Start with clear output
            input none

            pass render_quad
            {
                // convert the previous render target to a black and white image, add some noise, distort it,
                // then render to scene aligned quad
                material Ogre/Compositor/SecurityCam
                input 0 rt0
            }
        }
    }
}